Dr. Preston E. Harrison is a neurologist in Tyler, Texas and is affiliated with multiple hospitals in the area, including Christus Mother Frances Hospital-Tyler and UT Health Tyler. He received his medical degree from Baylor College of Medicine and has been in practice for more than 20 years. Dr. Preston E. Harrison has expertise in treating Alzheimer's dementia, Parkinson's disease, multiple sclerosis, among other conditions - see all areas of expertise. Dr. Preston E. Harrison accepts Medicare, Aetna, Humana, Blue Cross, United Healthcare - see other insurance plans accepted.